© 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group. The safety of repurchase agreements (repos) depends on the neoclassical premise that markets are reliable sources of liquidity; repos in practice disprove the theory by generating collateral calls, collateral sales, liquidity events, and liquidity-driven losses for repo-borrowing funds and their end investors. As repo-type lending now dominates money markets, borrowers’ self-protective preference for ‘safe assets’ as collateral has distorted financial markets, disrupting private investment, and economic performance. Using a balance sheet approach this paper explains the liquidity-supporting role of the traditional banking system and contrasts it with the liquidity-deman...